PT-2026-37184 · Saltcorn · Saltcorn

Glutamate · Published 2026-04-16 · Updated 2026-05-07 · CVE-2026-42259

Positive Technologies (AI Summary)

CVSS v4.0

5.1

Medium

Base vector

AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Name of the Vulnerable Software and Affected Versions Saltcorn versions prior to 1.4.6 Saltcorn versions prior to 1.5.6 Saltcorn versions prior to 1.6.0-beta.5

Description Saltcorn fails to properly validate the dest parameter during the post-login process. The is relative url() function only blocks strings containing :/ and //, which allows payloads using backslashes (``) to bypass the check. Since WHATWG-compliant browsers normalize backslashes to forward slashes for special schemes, an attacker can craft a URL that redirects a user to an attacker-controlled domain after they log in. This can be used for credential phishing by redirecting users to a forged site. The issue is reachable on default installations and occurs when a victim is tricked into logging in via a crafted URL. The vulnerability involves the is relative url() function and the dest parameter.

Recommendations Update to version 1.4.6. Update to version 1.5.6. Update to version 1.6.0-beta.5. As a temporary workaround, restrict or avoid using the dest parameter in login requests until the software is updated.

Exploit

Fix

Open Redirect

Weakness Enumeration

CWE-601

Related Identifiers

CVE-2026-42259

GHSA-F3G8-9XV5-77GV

Affected Products

Saltcorn

References · 5

• 🔥 https://github.com/saltcorn/saltcorn/security/advisories/GHSA-f3g8-9xv5-77gv · Exploit
• https://osv.dev/vulnerability/GHSA-f3g8-9xv5-77gv · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-42259 · Security Note
• https://github.com/saltcorn/saltcorn · Note
• https://twitter.com/CVEnew/status/2052477937782342143 · Twitter Post